TEXAS EARTHQUAKES AND SEISMIC WINDOWS


Date C.S.T. Mg/Int Epicenter Lat Lon FM Per NM Syn Sq. Miles
1882-Oct-22 16:14
/VII
Arkansas/felt Sherman 35._ 94._ -3 -3   32 hrs. 135,000
1887-May-03 15:13
7.4/XI
Sonora, Mex.felt El Paso 30.8 109.2 -4 -3 10 41 hrs. 615,000
1891-Jan-07 12:00
3.8/VII
Rusk, Texas 31.7 91.2   -2 -1 39 hrs.  
1917-Mar-27 13:56
3.8/VI
Panhandle, Carson Co. 35.4 101.3   6 5 39 hrs. 2,000
1925-Jul-30 06:17
4.9/VI
Panhandle, Carson Co. 35.3 101.3 24 24 9 7 hrs.! 200,000
1928-Pct-31 21:16
6.3/VIII
Mexico/felt El Paso 26._ 106._ 3 2   27 hrs.  
1931-Aug-16 05:40
6.4/VIII
Valentine, Big Bend 30.5 104.6   2 3 36 hrs. 450,000
1931-Aug-18 19:36
4./VI
Valentine, Big Bend 30.5 104.6   4 5 36 hrs. 200,000
1932-Apr-09 04:17
3.9/VI
Waco/Wortham 31.7 96.4 17 16 2 21 hrs. 100
1934-Apr-11 11:40
/V
Texas/Oklahoma border 33.9 95.5 12 9 -2 86 hrs. 3,000
1936-Jul-19 09:24
4.4/VI
Pampa/Gray County 35.3 100.3   2 0 51 hrs. 600
1948-Mar-11 22:29
4.5/VI
Amarillo/Perico 36.2 102.5 15 15 0 18 hrs. 500
1951-Ju20 11:37
4./VI
No. Texas 35.5 103.1 1 1   00 hrs.!!  
1952-Apr-09 10:29
/VI
El Reno, Okla/felt Texas 35.4 97.8 0 3   88 hrs 140,000
1956-Oct-30 04:16
/VIII
NE Oklahoma/felt Texas 36.2 95.9 10 13   80 hrs. 700
1957-Mar-19 10:38
/VI
NE Texas 32.1 95.1   4 3 28 hrs 10,000
1959-Jul-16 04:27
/VI
SW Oklahoma/felt Texas 34.5 98.5 -5 -4   30 hrs.  
1961-Jun-20  
/VI
Amarillo/Vega, Texas 32._ 102._ -8 -9 7 35 hrs.  
1964-Apr-28 15:19
4.4/V
TexasLouisiana border 31.7 93.6 1 15 16 41 hrs.  
1964-Aug-16 05:36
/IV
Hemphill, Texas 37.4 93.8 7 10 8 46 hrs.  
1966-Jul-20 03:05
4.8/V
Panhandle, Amarillo 35.7 101.2   2 3 41 hrs.  
1966-Aug-14 09:26
4.3/VI
Kermit/Winkler Co. 32.1 102.3   -2 -2 19 hrs.  
1969-May-12 01:26
3.4/VI
Texas/Mexico border 31.8 106.4 12 10 -2 48 hrs.  
1970-Jan-12 03:29
3.5/V
Texas/N. M. border 36.1 103.2   5 5 13 hrs. 700
1973-Dec-24 17:46
3./V
San Antonio/Falls City 29._ 98._ 13 13 1 21 hrs.  
1974-Feb-15 07:34
4.5/V
Panhandle, Perryton 36.5 100.7 9 9   24 hrs. 300
1975-Aug-01 01:28
4.8/II
West Texas 31.4 104.1 9 6 -5 32 hrs.  
1976-Jan-18 22:04
3.3/IV
Kermit 31.9 103.1 3 0   50 hrs.  
1976-Jan-24 10:48
4.1/V
SW Texas, Kermit 31.9 103.1 7 4   50 hrs.  
1977-Apr-26 03:03
3.3/IV
Kermit 31.9 103.1 -7 -7 7 50 hrs.  
1978-Jun-16 05:47
4.6/V
W. Texas 32.9 100.9 -4 -4 10 15 hrs. 20,000
1980-Jun-19 18:37
3.4/V
Panhandle, Kermit 35.5 101.1 10 -2 -4 64 hrs.  
1981-Jun-09 19:47
3.0/IV
E. Cent. Texas, Tyler 32.1 94.4   6 6 22 hrs.  
1981-Nov-06 06:37
3.2/IV
Jacksonville, E. Texas 32.1 95.3 -5 -5 9 13 hrs.  
1982-Jan-04 10:56
3.9/III
Fort Stockton 31.2 102.5 -6 -6 8 09 hrs!  
1982-Mar-28 17:24
3.0/III
Campbellton 28.8 98.2   0 3 66 hrs.  
1982-Oct-14 06:53
3.9/IV
Hartley/Dalhart 36.1 102.6 11 1 -3 4 days  
1982-Nov-27 20:37
3.3/IV
Snyder/O'Donnell 33.1 100.8 -6 -6   32 hrs.  
1983-Apr-02 22:55
3.4/IV
No. Texas 35.5 102.3 4 6   59 hrs.  
1983-Jul-23 09:25
3.4/IV
Flashing/Campbellton 28.7 98.1 0 14 14 22 hrs.  
1984-Mar-02 19:03
3.9/V
Jourdanton/Poteet 28.5 98.5 14 14 0 08 hrs.!  
1984-May-21 07:31
3.1/IV
No. Texas 35.1 102.2 7e 10   65 hrs.  
1984-Jul-23 10:25
3.4/V
S. Central Texas 29.1 98.2 10 -5 -4 44 hrs.  
1984-Aug-07 19:31
3.1/IV
Pleasanton 29.1 98.4 -4 10   65 hrs.  
1984-Sep-11 08:48
3.2/IV
W. Central Texas 31.9 100.7 1 16 16 22 hrs.  
1984-Sep-19 00:15
3.0/V
Denton 33.5 97.1 9 -5 -5 11 min.!!  
1985-Sep-18 09:54
3.3/V
Sanger/Valley View 33.5 97.1   2 3 42 hrs.  
1992-Jul-20 18:38
3.6/IV
Falls City/Hobson 28.9 98.1 6 -9 -9 12 hrs.  
1993-Apr-09 06:29
4.4/VI
San Antonio, So. Texas 28.9 98.2 3 4   24 hrs.  
1993-May-16 10:32
3.0/IV
Jourdanton/So. Texas 28.8 98.2 11 12 -3 46 hrs.  
1995-Apr-13 19:33
5.6/ VII
Alpine/Valentine 30.3 103.3 Fe-2 -2 11 40 hrs.  
1995-Apr-15 08:37
4.0/VI
Alpine/Valentine 30.3 103.3 Fe+0 2   40 hrs.  
Bold type indicates a "Seismic Window" of increased, potential for earthquakes.
Underlined items for quakes within perigean spring tides with Sychroneity less than 37 hrs.
Mg = Magnitude
Int = Mercalli Intensity
Lat = North Latitude
Lon = West Longitude
e = Eclipse (et = Total Eclipse)
FM = Date of Full Moon in relation to Quake
Per = Perigee = Date of Perigee in relation to Quake
NM = Date of New Moon in relation to Quake
Sync = Synchroneity is time difference between Syzygy (new or full stage of the Moon) and Perigee (On same day, only 2 to 5 times per year)
Jim Berkland, Geologist, Feb 17, 1998
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